Several built-in Seam components make it easy to display task lists. The pooledTaskInstanceList is a list of pooled tasks that users may assign to themselves:

<h:dataTable value="#{pooledTaskInstanceList}" var="task">
    <h:column>
        <f:facet name="header">Description</f:facet>
        <h:outputText value="#{task.description}"/>
    </h:column>
    <h:column>
        <s:link action="#{pooledTask.assignToCurrentActor}" value="Assign" taskInstance="#{task}"/>
    </h:column>            
</h:dataTable>

Note that instead of <s:link> we could have used a plain JSF <h:commandLink>:

<h:commandLink action="#{pooledTask.assignToCurrentActor}"> 
    <f:param name="taskId" value="#{task.id}"/>
</h:commandLink>

The pooledTask component is a built-in component that simply assigns the task to the current user.

The taskInstanceListByType component includes tasks of a particular type that are assigned to the current user:

<h:dataTable value="#{taskInstanceListByType['todo']}" var="task">
    <h:column>
        <f:facet name="header">Description</f:facet>
        <h:outputText value="#{task.description}"/>
    </h:column>
    <h:column>
        <s:link action="#{todoList.start}" value="Start Work" taskInstance="#{task}"/>
    </h:column>            
</h:dataTable>